1 Examples of viral infections include, mumps or hepatitis B. 2  Some autoimmune conditions-such as lupus, or Sjogren's syndrome. 3  Injury to the pancreas. 4  Idiopathic-about 15% of all cases of acute pancreatitis are termed idiopathic pancreatitis.
For instance, in America, these kinds of drums are referred to as the doumbek. They are widely used in E. Europe, N. Africa and a larger part of Asia. Good examples of these kinds of drums include the Bendir, Riq, Tamburine, Irish bodhran etc. These drums are mostly made of wood which forms almost a perfect circle.
Ad. The timpani is another type of pitched percussion instrument. Also called the kettle drum, timpani are bowl shaped drums which have a skin stretched over the top. The skin is struck with a large, soft mallet, and the bowl causes the sound to reverberate. Typically, an orchestra has three or four timpani drums.lthough not typically used in orchestras, steel drums are also a type of pitched percussion. A percussion instrument is any instrument that is struck to produce a sound. The piano actually uses felt lined hammers to strike the strings to create a sound.